Malignant neoplasm of bone and articular cartilage of other and unspecified sites (C41) ICD-10-CM
The C41 code range covers malignant neoplasm of bone and articular cartilage of other and unspecified sites with 7 ICD-10-CM diagnosis codes. 6 of them are billable and valid for claim submission in fiscal year 2026, and the category headers group them but cannot themselves be billed.
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
Codes in the C41 Range 7 codes · 6 billable
- C41 Malignant neoplasm of bone and articular cartilage of other and unspecified sitesNon-billable
- C41.0 Malignant neoplasm of bones of skull and face
- C41.1 Malignant neoplasm of mandible
- C41.2 Malignant neoplasm of vertebral column
- C41.3 Malignant neoplasm of ribs, sternum and clavicle
- C41.4 Malignant neoplasm of pelvic bones, sacrum and coccyx
- C41.9 Malignant neoplasm of bone and articular cartilage, unspecified
Clinical Terms in This Code Range
Definitions from the National Library of Medicine for conditions coded in the C41 range.
Cementoma
An odontogenic fibroma in which cells have developed into cementoblasts and which consists largely of cementum.
Chondrosarcoma
A slowly growing malignant neoplasm derived from cartilage cells, occurring most frequently in pelvic bones or near the ends of long bones, in middle-aged and old people. Most chondrosarcomas arise de novo, but some may develop in a preexisting benign cartilaginous lesion or in patients with ENCHONDROMATOSIS. (Stedman, 25th ed)
Chondrosarcoma, Clear Cell
A chondrosarcoma of adolescence to old age of the proximal EPIPHYSES of long bones. It has variably clear cytoplasm of the mostly neoplastic CHONDROCYTES with little intervening matrix.
Chondrosarcoma, Mesenchymal
A rare aggressive variant of chondrosarcoma, characterized by a biphasic histologic pattern of small compact cells intermixed with islands of cartilaginous matrix. Mesenchymal chondrosarcomas have a predilection for flat bones; long tubular bones are rarely affected. They tend to occur in the younger age group and are highly metastatic. (DeVita Jr et al., Cancer: Principles & Practice of Oncology, 3d ed, p1456)
Chordoma
A malignant tumor arising from the embryonic remains of the notochord. It is also called chordocarcinoma, chordoepithelioma, and notochordoma. (Dorland, 27th ed)
Clavicle
A bone on the ventral side of the shoulder girdle, which in humans is commonly called the collar bone.
Coccyx
The last bone in the VERTEBRAL COLUMN in tailless primates considered to be a vestigial tail-bone consisting of three to five fused VERTEBRAE.
Costal Cartilage
Bars of HYALINE CARTILAGE extending from the anterior ends of the upper RIBS. They attach to the STERNUM directly or indirectly by connecting to upper costal cartilage that attaches to the STERNUM. Costal cartilages extend the ribs anteriorly and contribute to the enhanced elasticity of the THORACIC WALL.
Enchondromatosis
Benign growths of cartilage in the metaphyses of several bones.
Ischium
One of three bones that make up the coxal bone of the pelvic girdle. In tetrapods, it is the part of the pelvis that projects backward on the ventral side, and in primates, it bears the weight of the sitting animal.
Mandible
The largest and strongest bone of the FACE constituting the lower jaw. It supports the lower teeth.
Nucleus Pulposus
Fibrocartilage inner core of the intervertebral disc. Prolapsed or bulged nucleus pulposus leads to INTERVERTEBRAL DISC DISPLACEMENT while proliferation of cells in the nucleus pulposus is associated with INTERVERTEBRAL DISC DEGENERATION.
Osteosarcoma
A sarcoma originating in bone-forming cells, affecting the ends of long bones. It is the most common and most malignant of sarcomas of the bones, and occurs chiefly among 10- to 25-year-old youths. (From Stedman, 25th ed)
Osteosarcoma, Juxtacortical
A form of osteogenic sarcoma of relatively low malignancy, probably arising from the periosteum and initially involving cortical bone and adjacent connective tissue. It occurs in middle-aged as well as young adults and most commonly affects the lower part of the femoral shaft. (Stedman, 25th ed)
Pubic Bone
A bone that forms the lower and anterior part of each side of the hip bone.
Sternum
A long, narrow, and flat bone commonly known as BREASTBONE occurring in the midsection of the anterior thoracic segment or chest region, which stabilizes the rib cage and serves as the point of origin for several muscles that move the arms, head, and neck.
About the C41 Code Range
The ICD-10 code C41 and its subcodes identify malignant neoplasms, or primary bone cancers, affecting various specified and unspecified bones and articular cartilage sites. These codes are used to classify tumors that originate in bone or cartilage across different body locations.
The detailed subcodes range from C41.0 for malignant tumors of the skull and facial bones, including conditions like chondrosarcoma of the skull or osteosarcoma of the jaw, to C41.1 specifying malignant neoplasms of the mandible (lower jaw). For the spine, C41.2 covers malignancies such as chordomas or osteosarcomas of vertebrae. Codes C41.3 and C41.4 include cancers of the ribs, sternum, clavicle, pelvic bones, sacrum, and coccyx, encompassing specific sarcomas and chordomas of these sites. The code C41.9 denotes unspecified malignant bone neoplasms. These codes help medical coders pinpoint diagnoses related to bone cancers like osteosarcoma, chondrosarcoma, and various primary malignant bone tumors by anatomical location, ensuring accurate clinical documentation and billing for bone malignancies.
Questions About This Page
How many billable codes are in the C41 range?
Of the 7 codes in this range, 6 are billable and valid for claim submission from October 1, 2025 through September 30, 2026. Category header codes group them but cannot be reported on claims.
What does the C41 range classify?
The range classifies malignant neoplasm of bone and articular cartilage of other and unspecified sites. Each code links to its own reference page with billing status, MS-DRG grouping, coding notes, and clinical information.
Related References
Source: CMS FY 2026 ICD-10-CM Tabular List and order file, effective October 1, 2025 through September 30, 2026.
